Improvement in horse-powers



inuit-d1' iaiei am cfm HENRY B. STEVENS, or BUEEALQ, NEW YORK', Assenon SQUIER, OF.' kSAME PLACE,A f l Letters Patent No. 114,874, dated May 16, 1871.`

ln'nPRovEniENT IN HORSE-POWERS.

i .The Schedule referred to lin these Letters` Patent and making part: o f the same.

- durable, than anyheretofore made.

I accomplish this. object, first, by building a frame with diagonal trees' on a new and greatly improved plan; and, secondly, byfan arrangement of the gearing,t which renders the different parts capable of easy and perfect adjustment'inftheir best working positions with regard-to each other,.by means of adjustable bearings, and .tracks or rims, for maintaining coincidence of the pitches `of the master-wheel and pinion.

In the accompanying drawing- Figure 1 is a `side. view of my' improved horsepower.

Figure .2 is a top view of the same.

Figure-3 is a vertical section through the center," showing the construction of the adjustable bearings.

In the construction of my improved horse-power I make ast-tong rectangular wooden frame by notching on the sills A the cross-pieces B.

' I then construct a diagonal truss or cross-trees, D, similar to the letter X 1in shape, bolted to the corners of the-aforesaid frame, the boltor bolts passing through the crosspiece's and sills in such a way that if the timbershiinks, simply screwing up the nuts will' render the frame tight and rigid.

' Blocks or pedestals 8 may beplaced between the endsof thejcross-trees D and the cross-pieces B, or the cross-trees may becurved downward if necessary.

In the center'of theisills is mortised and 'keyed a bridge-tree C, which supports the stepbox l5. This step-box-,contains bearings for both the sweep and counter-shafts 17 and 16. These bearings, being thus. cast together in one piece and properly bored, must always remain perfectly adjusted to each other.

In the bottom of the sweep-shaft bearing 15 is a' set-screw, 5, by which the sweep-shaft may be raised or lowered, and between the end of this screw and the shaft i's a disk of steel 6, g. 3, which prevents' the shaft from wearing away the end of the screw. The step-box rests in a mortise in the bridgetree O, in which. its position can be adj usted by wedges driven on either side.

trees, and this bearing has loose bushings 9 adjustable by the set-screws 3 and 4,'so-as to compensate forall wear and tear, and also to .adjust the master'- wheel 20 sothat its cogs shall mesh properly with'the pinion 19. l 4

'Io the sweep-shaft 17 is firmly keyed a heavy master crown-wheel, 20, fnrnishedwith au outer track or rim, L, which rises to the pitch circle of the teeth.

This master-wheel meshes into a pinion 19, also pro# vided with a similar track, L', rising to the pitch circle of the teeth, and as :the two tracks are fitted to v run in contact, or nearly so, it is plain the teeth must always mesh in their best working position.

Themaster-wheel is also held in position by a guideroller, 11, resting on it.

The piu of this guideu'oller is not'perfectl straight, i but has the end which-is fixed in the guide-plate 12 a little bent downward, or turned eccentrically, as seen at K, fig. 3, sothat by turning the pin, the guideroller may be lowered as the pin wears.

By this means the master-wheel and pinion are aly ways kept in propel' contact with each other, and slipping of their cogsis prevented.

I do not,-broadly, claim the cross-tree or diagonal braces', nor metallic 'pillarsnor adjustable metallic bushes for bearings; but I believe that the combinav B, C, in combination withthe cross-trees D, hub 14,

and corner-bolts O, substantially as set forth.

2. The metallic hub 1K4, in' combination with the adjustable .bushings 9 and set-screws 3 and/1, sub-- stantially as set forth.

3. The metallic pedestals 8, bolt O, and caps 7, in

combination with 'the cross-trees D, substantially described. l p 4. The metallic step-box 15, when cast in one piece with the bearing ot' the-counter-shaft 16, substantially as described. l

5. The'eccentric-pin 10, in combination with the guide-roller 11, for the purpose of adjusting the roller on the master-wheel, substantially asset forth.

6. The sweep-shaft 17, in combination with the master-wheel'l and pinion 19, when said master-wheel and pinion are constructed with a rim or track, L and L', cast upon their peripheries, as and for the purposes described.

7. The sweep-cap 18, constructed with one 'or more lead-pole sockets 1 l, substantially as' set forth.

HENRY B. STEVENS. WVitnesses:

A. L. BECK, Geenen SILVA, Jr.

.iro .GEORGE L. 

